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| A compact core-jet structure in the changing-look Seyfert NGC 2617 | |
Yang, Jun1,2 ; Paragi, Zsolt2; Beswick, Robert J.3; Chen, Wen4; van Bemmel, Ilse M.2; Wu, Qingwen5; An, Tao6; Wu, Xiaocong6; Fan, Lulu7,8,9; Oonk, J. B. R.10,11,12; Liu, Xiang13; Wang, Weihua14
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| 2021-05-01 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| ISSN | 0035-8711 |
| Volume | 503Issue:3Pages:3886-3895 |
| Contribution Rank | 13 |
| Abstract | The nearby face-on spiral galaxy NGC 2617 underwent an unambiguous 'inside-out' multiwavelength outburst in Spring 2013, and a dramatic Seyfert-type change probably between 2010 and 2012, with the emergence of broad optical emission lines. To search for the jet activity associated with this variable accretion activity, we carried out multiresolution and multiwavelength radio observations. Using the very long baseline interferometric (VLBI) observations with the European VLBI Network at 1.7 and 5.0 GHz, we find that NGC 2617 shows a partially synchrotron self-absorbed compact radio core with a significant core shift, and an optically thin steep-spectrum jet extending towards the north up to about 2 pc in projection. We also observed NGC 2617 with the electronic Multi-Element Remotely Linked Interferometer Network at 1.5 and 5.5 GHz, and revisited the archival data of the Very Large Array (VLA) and the Very Long Baseline Array (VLBA). The radio core had a stable flux density of similar to 1.4 mJy at 5.0 GHz between 2013 June and 2014 January, in agreement with the expectation of a supermassive black hole in the low accretion rate state. The northern jet component is unlikely to be associated with the 'inside-out' outburst of 2013. Moreover, we report that most optically selected changing-look active galactic nuclei (AGN) at z < 0.83 are sub-mJy radio sources in the existing VLA surveys at 1.4 GHz, and it is unlikely that they are more active than normal AGN at radio frequencies. |
| Keyword | galaxies: active galaxies: individual: NGC 2617 galaxies: jets galaxies: Seyfert radio continuum: galaxies |
| DOI | 10.1093/mnras/stab706 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | RADIO-SOURCES ; RELATIVISTIC JETS ; VARIABILITY ; GALAXIES ; EMISSION ; QUASARS ; SKY ; DISCOVERY ; CATALOG ; ORIGIN |
| Funding Project | National Key Research and Development Program of China[2018YFA0404603] ; Chinese Academy of Sciences (CAS)[114231KYSB20170003] ; National Natural Science Foundation of China (NSFC)[11822303] ; National Natural Science Foundation of China (NSFC)[11773020] ; European Commission[RI-261525 NEXPReS] ; European Commission[283393] ; National Aeronautics and Space Administration ; EVN[RY005] ; EVN[EY021] |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000649000600052 |
| Publisher | OXFORD UNIV PRESS |
| Funding Organization | National Key Research and Development Program of China ; Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China (NSFC) ; European Commission ; National Aeronautics and Space Administration ; EVN |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/4195 |
| Collection | 射电天文研究室_星系宇宙学研究团组 |
| Corresponding Author | Yang, Jun |
| Affiliation | 1.Chalmers Univ Technol, Dept Space Earth & Environm, Onsala Space Observ, SE-43992 Onsala, Sweden 2.Joint Inst VLBI ERIC JIVE, Postbus 2, NL-7990 AA Dwingeloo, Netherlands 3.Univ Manchester, Jodrell Bank Ctr Astrophys, Sch Phys & Astron, Manchester M13 9PL, Lancs, England 4.Chinese Acad Sci, Yunnan Observ, 396 Yangfangwang, Kunming 650216, Yunnan, Peoples R China 5.Huazhong Univ Sci & Technol, Sch Phys, Dept Astron, Wuhan 430074, Peoples R China 6.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Radio Astron, Shanghai 200030, Peoples R China 7.Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China 8.Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China 9.Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China 10.SURFsara, POB 94613, NL-1090 GP Amsterdam, Netherlands 11.Leiden Univ, Leiden Observ, Pob 9513, NL-2300 RA Leiden, Netherlands 12.Netherlands Inst Radio Astron ASTRON, NL-7991 PD Dwingeloo, Netherlands 13.Chinese Acad Sci, Xinjiang Astron Observ, Key Lab Radio Astron, 150 Sci 1 St, Urumqi 830011, Peoples R China 14.Changzhou Inst Technol, Sch Comp Informat Engn, Changzhou 213032, Peoples R China |
| Recommended Citation GB/T 7714 | Yang, Jun,Paragi, Zsolt,Beswick, Robert J.,et al. A compact core-jet structure in the changing-look Seyfert NGC 2617[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2021,503(3):3886-3895. |
| APA | Yang, Jun.,Paragi, Zsolt.,Beswick, Robert J..,Chen, Wen.,van Bemmel, Ilse M..,...&Wang, Weihua.(2021).A compact core-jet structure in the changing-look Seyfert NGC 2617.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,503(3),3886-3895. |
| MLA | Yang, Jun,et al."A compact core-jet structure in the changing-look Seyfert NGC 2617".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 503.3(2021):3886-3895. |
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| Yang-2021-A compact （4347KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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